Production mold for brake disc

Abstract

The utility model discloses a production mold for a brake disc, and relates to the technical field of brake disc production. The die comprises an upper die body and a lower die body which are vertically aligned, a first shaping die body is coaxially arranged between the upper die body and the lower die body, a first female die part is arranged in the middle of the top surface of the lower die body, a male die part is fixedly arranged on the top surface of the lower die body on the inner side of the first female die part, and a second shaping die body is placed on the top surface of the male die part. A plurality of through grooves are formed in the end face of the second shaping mold body in the circumferential direction in an array mode, and a plurality of protruding columns are fixedly arranged on the side wall of the second shaping mold body in the circumferential direction in an array mode. The cast brake disc body can effectively reduce deformation of the brake disc body, the production quality of the brake disc body is improved, and meanwhile the brake disc body produced by the device is long in service life and good in practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of brake disc production, in particular to a production mold for brake discs. Background Art

[0002] The brake disc is simply a round plate that rotates when the car is moving. The brake caliper clamps the brake disc to generate braking force. When you step on the brake, it clamps the brake disc to slow down or stop the car. The brake disc has a good braking effect and is easier to maintain than drum brakes. Therefore, in the existing automobile production, the brake disc is an indispensable component;

[0003] The existing brake discs are mainly produced by casting, but the existing brake discs have the following deficiencies in actual production:

[0004] 1. In the existing brake disc casting process, coated sand is mainly used as a mold for casting. However, in the actual production process, when coated sand is used as a hot core for casting the brake disc, the brake disc is deformed, which affects the quality of the brake disc. After the brake disc is cast, the staff even needs to perform secondary processing, which increases the labor intensity of the staff;

[0005] 2. In the production process of existing brake discs, in order to improve the heat dissipation of the friction part, heat dissipation holes are often opened on the side wall of the friction part to improve the performance of the brake disc during use. However, in actual use, the design of the brake disc will cause a certain deformation of the friction part during the clamping process, thereby reducing the service life of the brake disc;

[0006] Therefore, it is necessary to improve the prior art to solve the above-mentioned technical problems. Utility Model Content

[0007] The utility model aims to provide a brake disc production mold with good casting quality and effectively improving the service life of the brake disc, which is used to improve the casting quality of the brake disc and thus help to improve the service life of the brake disc.

[0008] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0009] The utility model is a production mold for a brake disc, comprising an upper mold body and a lower mold body which are aligned in the upper and lower directions, a first shaping mold body is coaxially arranged between the upper mold body and the lower mold body, a first concave mold part is provided in the middle of the top surface of the lower mold body, and a convex mold part is fixedly arranged on the top surface of the lower mold body inside the first concave mold part, a second shaping mold body is placed on the top surface of the convex mold part, a plurality of through grooves are provided on the end surface of the second shaping mold body along a circumferential array, and a plurality of convex columns are fixedly arranged on the side wall of the second shaping mold body along a circumferential array.

[0010] Furthermore, the vertical cross-section of the male mold portion is in the shape of a trumpet that is smaller at the top and larger at the bottom, and the internal vertical cross-section of the first shaping mold body is in the shape of a trumpet that is smaller at the top and larger at the bottom.

[0011] Furthermore, a second concave mold portion for placing a second shaping mold body is provided on the bottom surface of the upper mold body.

[0012] Furthermore, a liquid inlet hole with a vertical cross-section that is larger at the top and smaller at the bottom is opened on one side of the top surface of the upper mold body, and the liquid inlet hole is located above the rotation track surface of the through groove.

[0013] Furthermore, the material of the upper mold body and the lower mold body is coated sand.

[0014] Furthermore, the first shaping mold body and the second shaping mold body are made of cold core sand.

[0015] The utility model has the following beneficial effects:

[0016] When the utility model is in use, through the arrangement of the first shaping mold body and the second shaping mold body, the first shaping mold body and the second shaping mold body are cold cores prepared by cold core sand, and the upper mold body and the lower mold body are hot cores prepared by coated sand. During the pouring process, the first shaping mold body is used for forming the outside of the brake disc body, and the second shaping mold body is used for forming the support column and the heat dissipation hole, thereby effectively shaping the outside of the brake disc body, effectively preventing the deformation of the brake disc body, reducing the labor intensity of the staff for re-processing, and having good practicality.

[0017] When the utility model is in use, the support column inside the friction part can be cast and formed by the arrangement of the through groove on the second forming mold body, and the heat dissipation holes on the side wall of the friction part can be formed by the arrangement of the convex column. In this way, the strength of the friction part can be improved while the heat dissipation of the friction part is maintained, thereby facilitating the improvement of the service life of the brake disc body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the production mold for brake discs;

[0019] Figure 2 for Figure 1 Exploded view of the structure;

[0020] Figure 3 for Figure 1 Exploded view of the structure in the vertical direction;

[0021] Figure 4 This is a vertical exploded view of the brake disc body after casting;

[0022] Figure 5 It is a schematic diagram of the overall structure of the brake disc body.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Upper mold body; 2. First shaping mold body; 3. Lower mold body; 4. Second shaping mold body; 5. Brake disc body; 101. Liquid inlet hole; 102. Second concave mold part; 301. First concave mold part; 302. Concave mold part; 401. Through groove; 402. Boss; 501. Friction part; 502. Support column; 503. Heat dissipation hole. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention and the accompanying drawings of the specification.

[0026] See also Figures 1 to 5 As shown, the utility model is a production mold for a brake disc, comprising an upper mold body 1 and a lower mold body 3 which are aligned up and down, the upper mold body 1 and the lower mold body 3 are made of coated sand, and the coated sand is made into a hot core;

[0027] A first shaping mold body 2 is coaxially arranged between the upper mold body 1 and the lower mold body 3, a first concave mold portion 301 is provided in the middle of the top surface of the lower mold body 3, and a convex mold portion 302 is fixedly provided on the top surface of the lower mold body 3 inside the first concave mold portion 301, a second shaping mold body 4 is placed on the top surface of the convex mold portion 302, the vertical section of the convex mold portion 302 is a trumpet shape with a small top and a large bottom, and the internal vertical section of the first shaping mold body 2 is a trumpet shape with a small top and a large bottom. This arrangement can realize the forming of the brake disc body 5, a second concave mold portion 102 for placing the second shaping mold body 4 is provided on the bottom surface of the upper mold body 1, and a liquid inlet hole 101 with a vertical section with a large top and a small bottom is provided on one side of the top surface of the upper mold body 1. The setting of the liquid inlet hole 101 can be used for heating the molten metal, and the setting of the liquid inlet hole 101 can play a buffering role while maintaining the kinetic energy of the molten metal, and the liquid inlet hole 101 is located above the rotation track surface of the through groove 401, and this setting can effectively reduce the direct impact on the second shaping mold body 4. The material of the first shaping mold body 2 and the second shaping mold body 4 is cold core sand, and the cold core sand is made into a cold core, which is mainly solidified and formed by ammonia. This method is a prior art, so it will not be described in detail here. The cooperation of the first concave mold part 301, the convex mold part 302, the second concave mold part 102, the first shaping mold body 2 and the second shaping mold body 4 can realize the forming of the brake disc body 5;

[0028] A plurality of through grooves 401 are provided on the end surface of the second shaping mold body 4 in a circumferential array, and a plurality of convex pillars 402 are fixedly provided on the side wall of the second shaping mold body 4 in a circumferential array. The provision of the through grooves 401 can realize the formation of the support pillars 502 inside the friction part 501, and the provision of the convex pillars 402 can realize the formation of the heat dissipation holes 503 on the side wall of the friction part 501;

[0029] When the above arrangement is in use, the staff first prepares the upper mold body 1, the first shaping mold body 2, the lower mold body 3 and the second shaping mold body 4, and then fits the first shaping mold body 2 on the outside of the male mold part 302, and then places the second shaping mold body 4 on the top surface of the male mold part 302, and finally fits the upper mold body 1 on the top surface of the first shaping mold body 2, and aligns the liquid inlet hole 101 on one of the through grooves 401. After completion, the staff injects the molten metal into the device through the liquid inlet hole 101, and the casting and forming of the brake disc body 5 can be completed.

[0030] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A production mold for a brake disc, comprising an upper mold body (1) and a lower mold body (3) arranged in an aligned manner up and down, Features: A first shaping die (2) is coaxially arranged between the upper die (1) and the lower die (3); a first concave die portion (301) is provided in the middle of the top surface of the lower die (3); a convex die portion (302) is fixedly provided on the top surface of the lower die (3) inside the first concave die portion (301); a second shaping die (4) is placed on the top surface of the convex die portion (302); a plurality of through grooves (401) are provided on the end surface of the second shaping die (4) in a circumferential array; and a plurality of convex columns (402) are fixedly provided on the side wall of the second shaping die (4) in a circumferential array.

2. A production mold for a brake disc according to claim 1, It is characterized in that The vertical cross-section of the male mold part (302) is in the shape of a trumpet that is small at the top and large at the bottom, and the internal vertical cross-section of the first shaping mold body (2) is in the shape of a trumpet that is small at the top and large at the bottom.

3. A production mold for a brake disc according to claim 2, It is characterized in that The bottom surface of the upper mold body (1) is provided with a second concave mold portion (102) for placing the second shaping mold body (4).

4. A production mold for a brake disc according to claim 3, It is characterized in that A liquid inlet hole (101) with a vertical cross-section that is larger at the top and smaller at the bottom is provided on one side of the top surface of the upper mold body (1), and the liquid inlet hole (101) is located above the rotation track surface of the through groove (401).

5. A production mold for a brake disc according to claim 1 or 4, It is characterized in that The upper mold body (1) and the lower mold body (3) are made of coated sand.

6. A production mold for a brake disc according to claim 5, It is characterized in that The first shaping mold body (2) and the second shaping mold body (4) are made of cold core sand.

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